Installing LVM

I am new to Linux. I have a redhat 2.4.9-e.24 machine which was set up by an ex-sysadmin. This has 2 hard disks with lots of unused space.
sda has 10 partitions and sdb has 15. There is no lvm on this machine.

I want to install lvm on this so that i can create delete and modify FS with out having to reboot my machne each time i do it (which is the case right now).

my quetions are:
1) What RPM doi have to install for LVM for my machine
2) Where can i download it from
3) I cant create any more partitions on sdb (max of 15 is reached), so would it be of any use installing lvm?

If you don't want to include the LVM1 backwards-compatibility code use:
./configure --with-lvm1=none

To separate the LVM1 support into a shared library loaded by lvm.conf use:
./configure --with-lvm1=shared

3) Build and install LVM2.

Run 'make install' from the top directory.

4) Create a configuration file

The tools will work fine without a configuration file being
present, but you ought to review the example file in doc/example.conf.
For example, specifying the devices that LVM2 is to use can
make the tools run more efficiently - and avoid scanning /dev/cdrom!

Please also refer to the WHATS_NEW file and the manual pages for the
individual commands.